An anatomical insight into the third head of biceps brachii muscle.

Hitendra Kumar, Srijit Das, Gayatri Rath

Research output: Contribution to journalArticle

Abstract

BACKGROUND: The biceps brachii muscle is known to show variations in the number of heads. This study was performed to evaluate the variations in the origin of the biceps brachii muscle heads. MATERIALS AND METHODS: Both extremities of 48 formalin fixed cadavers (n = 96) were studied for abnormal heads of biceps brachii muscle. The flexor compartment of the arm was dissected and the attachments of the biceps brachii muscle were studied in detail. Appropriate photographs were taken. RESULTS: Among ninety six upper limbs studied, we observed three heads of biceps on both sides of a male cadaver aged 56 yrs (3.33%). The two heads of the biceps arose from its usual position but the anomalous third head arose from the anterior limb of the 'V' shaped insertion of the deltoid muscle on the humerus. The third head was found to fuse with the common belly of the muscle well before the bicipital tendon and its aponeurosis. Bilaterally this third head was supplied by a twig of the musculocutaneous nerve. No other abnormalities relating to the biceps were observed in any of the sides of the other 47 cadavers (n = 94). CONCLUSION: Our study revealed that the incidence of third head of biceps brachii may be approximately 3.33 % but larger studies are needed to confirm this fact. The third head of biceps brachii may be an incidental finding at autopsy or during routine anatomical dissections. Unless symptomatic, the third head of biceps brachii may not be detected in clinical studies (Fig. 3, Ref. 15).

Original languageEnglish
Pages (from-to)76-78
Number of pages3
JournalBratislavské lekárske listy
Volume109
Issue number2
Publication statusPublished - 2008
Externally publishedYes

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Muscles
Head
Cadaver
Extremities
Musculocutaneous Nerve
Deltoid Muscle
Incidental Findings
Humerus
Upper Extremity
Tendons
Formaldehyde
Dissection
Autopsy
Arm
Cohort Studies

ASJC Scopus subject areas

  • Medicine(all)

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An anatomical insight into the third head of biceps brachii muscle. / Kumar, Hitendra; Das, Srijit; Rath, Gayatri.

In: Bratislavské lekárske listy, Vol. 109, No. 2, 2008, p. 76-78.

Research output: Contribution to journalArticle

Kumar, Hitendra ; Das, Srijit ; Rath, Gayatri. / An anatomical insight into the third head of biceps brachii muscle. In: Bratislavské lekárske listy. 2008 ; Vol. 109, No. 2. pp. 76-78.
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